xamxam/app/router.php

<?php
/**
 * Router script for PHP built-in development server (php -S).
 *
 * All non-asset requests go through the front controller (public/index.php).
 * Admin panel and static files are served directly.
 */

$uri = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);

// Static assets: let the dev server handle them directly
$ext = pathinfo($uri, PATHINFO_EXTENSION);
if (in_array($ext, ['css', 'js', 'png', 'jpg', 'jpeg', 'gif', 'ico', 'svg', 'woff', 'woff2', 'ttf', 'eot', 'map'], true)) {
    return false; // serve directly
}

// Admin panel: serve files directly
if (str_starts_with($uri, '/admin')) {
    // Rewrite /admin → /admin/index.php
    $file = __DIR__ . '/public' . $uri;
    if (is_dir($file)) {
        $file .= '/index.php';
    }
    if (file_exists($file)) {
        include $file;
        return true;
    }
}

// Send everything else through the front controller
$_SERVER['SCRIPT_NAME'] = '/index.php';
require __DIR__ . '/public/index.php';
return true;